"""
禁忌搜索算法

作者：斯黄
日期：2025年3月4日
"""

import numpy as np
import matplotlib.pyplot as plt
import random
import copy

class TabuSearch:
    def __init__(self, tabu_list_size=10, max_iterations=1000):
        self.tabu_list_size = tabu_list_size
        self.max_iterations = max_iterations
        self.tabu_list = []
        self.best_solution = None
        self.best_objective = float('inf')
        self.history = []
    
    def objective_function(self, solution):
        """目标函数"""
        raise NotImplementedError("Subclass must implement objective_function")
    
    def generate_neighbors(self, solution):
        """生成邻域解"""
        raise NotImplementedError("Subclass must implement generate_neighbors")
    
    def search(self, initial_solution):
        """执行禁忌搜索"""
        current_solution = copy.deepcopy(initial_solution)
        current_objective = self.objective_function(current_solution)
        
        self.best_solution = copy.deepcopy(current_solution)
        self.best_objective = current_objective
        
        for iteration in range(self.max_iterations):
            neighbors = self.generate_neighbors(current_solution)
            
            best_neighbor = None
            best_neighbor_objective = float('inf')
            
            for neighbor in neighbors:
                neighbor_objective = self.objective_function(neighbor)
                if neighbor_objective < best_neighbor_objective:
                    best_neighbor = neighbor
                    best_neighbor_objective = neighbor_objective
            
            if best_neighbor is not None:
                current_solution = best_neighbor
                current_objective = best_neighbor_objective
                
                if current_objective < self.best_objective:
                    self.best_solution = copy.deepcopy(current_solution)
                    self.best_objective = current_objective
                
                self.history.append({
                    'iteration': iteration,
                    'current_objective': current_objective,
                    'best_objective': self.best_objective
                })
        
        return self.best_solution, self.best_objective

if __name__ == "__main__":
    print("禁忌搜索算法示例") 